Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method of wireless communication of a user equipment (UE), comprising: transmitting a random-access channel (RACH) preamble to a base station in one or more attempts; receiving, through a random access response message from the base station, information comprising a number of attempts the base station uses to decode the RACH preamble; adjusting a transmission power for a connection request message according to the number of attempts the base station uses to decode the RACH preamble; and transmitting the connection request message using the adjusted transmission power.
2. The method of claim 1 , wherein the adjusting the transmission power for the connection request message comprises decreasing the transmission power to be lower than a threshold when the base station decodes the RACH preamble in one attempt.
This invention relates to wireless communication systems, specifically to methods for optimizing transmission power in random access procedures. The problem addressed is inefficient power usage during initial connection requests, which can lead to unnecessary energy consumption and interference in the network. The method involves adjusting transmission power for a connection request message, such as a Random Access Channel (RACH) preamble, based on the success of the initial transmission attempt. If a base station successfully decodes the RACH preamble in a single attempt, the transmission power for subsequent connection requests is decreased to a level below a predefined threshold. This reduces power consumption and minimizes interference in the network while maintaining reliable communication. The method may also include determining whether the base station successfully decoded the preamble in one attempt, which involves monitoring acknowledgment signals or other feedback from the base station. The power adjustment is applied dynamically to ensure efficient use of resources while maintaining communication quality. The technique is particularly useful in scenarios where multiple devices attempt to connect to the network, such as in IoT or machine-type communications, where power efficiency is critical.
3. The method of claim 1 , wherein the adjusting the transmission power for the connection request message comprises increasing the transmission power to be higher than a threshold when the base station decodes the RACH preamble in two or more attempts.
This invention relates to wireless communication systems, specifically improving the reliability of random access procedures in cellular networks. The problem addressed is the inefficiency in handling connection requests when a base station fails to decode a random access channel (RACH) preamble in the first attempt, leading to repeated retransmissions and increased latency. The method involves adjusting the transmission power of a connection request message based on the number of decoding attempts by the base station. If the base station successfully decodes the RACH preamble in two or more attempts, the transmission power for subsequent connection request messages is increased to a level higher than a predefined threshold. This ensures stronger signal reception, reducing the likelihood of further decoding failures and improving the overall efficiency of the random access process. The adjustment is dynamic, adapting to real-time conditions to optimize power usage while maintaining reliable communication. The method may also include monitoring the number of decoding attempts and applying the power adjustment only when a threshold number of attempts is exceeded, preventing unnecessary power increases in cases of transient interference. This approach enhances network performance by minimizing delays and resource consumption during initial access procedures.
4. The method of claim 1 , wherein the transmitting further comprises transmitting the connection request message in the number of attempts.
A method for managing wireless communication connections involves transmitting a connection request message from a first device to a second device. The method includes determining a number of attempts to transmit the connection request message based on a signal quality metric between the first and second devices. The signal quality metric may include received signal strength, signal-to-noise ratio, or other indicators of communication reliability. The method further involves transmitting the connection request message in the determined number of attempts to improve the likelihood of successful connection establishment. If the signal quality is poor, the method may increase the number of transmission attempts to compensate for potential packet loss or interference. Conversely, if the signal quality is high, fewer attempts may be used to conserve power and bandwidth. The method may also include adjusting the transmission power or modulation scheme based on the signal quality metric to further optimize communication efficiency. This approach ensures reliable connection establishment while balancing resource usage in wireless networks.
5. The method of claim 1 , wherein the information further comprises a beam gain measured at the base station while the RACH preamble is transmitted.
A method for enhancing wireless communication involves measuring and utilizing beam gain at a base station during the transmission of a random access channel (RACH) preamble. The technique addresses challenges in accurately determining signal quality and optimizing beamforming in wireless networks, particularly in scenarios with multiple antennas or directional beams. The method includes transmitting a RACH preamble from a user device to the base station, where the preamble is used to initiate communication or synchronize with the network. The base station measures the beam gain associated with the received preamble, which quantifies the signal strength and directionality of the transmission. This measured beam gain is then used to adjust beamforming parameters, improve signal reception, or select the optimal beam for subsequent communications. The method may also involve comparing the measured beam gain with predefined thresholds or historical data to refine beam selection algorithms. By incorporating beam gain measurements during RACH preamble transmission, the technique enhances the reliability and efficiency of wireless communication links, particularly in environments with high interference or dynamic channel conditions. The approach is applicable to various wireless standards, including 5G and beyond, where precise beam management is critical for performance.
6. The method of claim 5 , wherein the transmitting further comprises transmitting the connection request message based on the number of attempts and the beam gain.
This invention relates to wireless communication systems, specifically improving connection reliability in scenarios where multiple transmission attempts are made with varying beam gains. The problem addressed is ensuring successful transmission of connection request messages in environments with fluctuating signal conditions, such as millimeter-wave or high-frequency communications where beamforming is critical. The method involves transmitting a connection request message from a first device to a second device, where the transmission is adjusted based on the number of previous attempts and the beam gain used. The beam gain refers to the directional amplification of the signal, which is adjusted to optimize transmission success. If initial attempts fail, subsequent transmissions are modified by altering the beam gain or the number of retries, ensuring efficient use of resources while maintaining connection reliability. The system may also track historical transmission data to dynamically adjust parameters for future attempts, improving overall performance in dynamic wireless environments. This approach is particularly useful in scenarios where devices operate in challenging propagation conditions, such as non-line-of-sight or high-interference environments.
7. The method of claim 1 , further comprising receiving a synchronization subframe.
A method for wireless communication involves synchronizing a user device with a network by receiving a synchronization subframe. The synchronization subframe contains timing and frequency information to align the device with the network's transmission schedule. This process ensures proper coordination between the device and the network, enabling reliable data exchange. The method may also include additional steps such as detecting the synchronization subframe, decoding its contents, and adjusting the device's timing and frequency parameters accordingly. The synchronization subframe may be transmitted periodically or on-demand to maintain synchronization in dynamic network conditions. This technique is particularly useful in wireless communication systems where precise timing is critical for efficient data transmission and reception. The method may be implemented in various wireless standards, including cellular networks, Wi-Fi, or other radio access technologies. The synchronization subframe may include reference signals, control information, or other data to assist the device in achieving and maintaining synchronization with the network.
8. The method of claim 7 , wherein the synchronization subframe comprises one or more of a primary synchronization signal, a secondary synchronization signal, an extended synchronization signal, a physical broadcast channel, or a beam reference signal.
This invention relates to wireless communication systems, specifically methods for synchronizing user equipment (UE) with a base station. The problem addressed is the need for efficient and reliable synchronization in wireless networks, particularly in scenarios involving multiple beams or signals. The invention provides a synchronization subframe that includes one or more synchronization signals or channels to facilitate this process. The synchronization subframe may contain a primary synchronization signal (PSS), a secondary synchronization signal (SSS), an extended synchronization signal, a physical broadcast channel (PBCH), or a beam reference signal (BRS). These signals help the UE detect and align with the base station's timing, frequency, and beam direction. The PSS and SSS are used for initial cell search and frame synchronization, while the extended synchronization signal may provide additional timing or beamforming information. The PBCH carries essential system information, and the BRS assists in beam tracking and selection. By including these elements in a structured subframe, the invention ensures robust synchronization in diverse wireless environments. The method is particularly useful in advanced wireless systems like 5G, where beamforming and multi-beam operations are common.
9. The method of claim 1 , wherein each attempt is made at a transmission time denoted by a combination of one or more of a frame index, a subframe index, or a symbol index.
This invention relates to wireless communication systems, specifically methods for scheduling and transmitting data packets in a network. The problem addressed is the efficient and reliable transmission of data in environments with varying channel conditions, interference, or other disruptions that may affect successful delivery. The invention provides a method for retransmitting data packets when initial transmission attempts fail, improving overall communication reliability. The method involves determining a transmission time for each retransmission attempt based on a combination of one or more timing parameters, including a frame index, a subframe index, or a symbol index. These parameters define specific time slots within a communication frame structure, allowing precise scheduling of retransmissions. By selecting appropriate combinations of these indices, the system can adapt to network conditions, avoid collisions, and optimize resource usage. The method ensures that retransmissions are timed in a way that maximizes the likelihood of successful delivery while minimizing unnecessary delays or redundant transmissions. This approach enhances data throughput and reduces latency in wireless networks.
10. An apparatus for wireless communication, comprising: means for transmitting a random-access channel (RACH) preamble to a base station in one or more attempts; means for receiving, through a random access response message from the base station, information comprising a number of attempts the base station uses to decode the RACH preamble; means for adjusting a transmission power for a connection request message according to the number of attempts the base station uses to decode the RACH preamble; and wherein the means for transmitting is configured to transmit the connection request message using the adjusted transmission power.
Wireless communication systems use random-access procedures to establish connections between user devices and base stations. During this process, a device transmits a random-access channel (RACH) preamble, which the base station attempts to decode. If the preamble is not successfully decoded, the device may retransmit it with increased power. However, existing methods lack feedback on how many attempts the base station made to decode the preamble, leading to inefficient power adjustments and potential delays in connection establishment. This invention addresses this issue by providing an apparatus for wireless communication that includes a transmitter and a receiver. The transmitter sends a RACH preamble to a base station in one or more attempts. The receiver obtains, through a random access response message from the base station, information indicating the number of attempts the base station used to decode the preamble. The apparatus then adjusts the transmission power for a subsequent connection request message based on this number of attempts. The transmitter then sends the connection request message using the adjusted power level. This feedback mechanism allows the device to optimize its transmission power, improving efficiency and reducing connection delays. The invention applies to wireless communication systems where reliable and timely connection establishment is critical, such as in cellular networks.
11. The apparatus of claim 10 , wherein the means for adjusting the transmission power for the connection request message is configured to decrease the transmission power to be lower than a threshold when the base station decodes the RACH preamble in one attempt.
A wireless communication apparatus is designed to optimize power consumption during random access procedures in cellular networks. The problem addressed is inefficient power usage in mobile devices when transmitting connection request messages, particularly in scenarios where the base station successfully decodes the preamble on the first attempt. Current systems often transmit at unnecessarily high power levels, leading to wasted energy and potential interference. The apparatus includes a power adjustment mechanism that dynamically reduces the transmission power of the connection request message when the base station successfully decodes the RACH (Random Access Channel) preamble in a single attempt. This ensures that the device only uses the minimum necessary power for successful communication, conserving battery life and reducing network congestion. The adjustment is based on feedback from the base station, allowing the device to adapt its transmission power in real-time. The apparatus may also include components for monitoring signal quality, managing power levels, and coordinating with the base station to ensure reliable communication while minimizing energy expenditure. This solution is particularly useful in 5G and beyond networks, where energy efficiency is critical for IoT devices and other power-constrained applications.
12. The apparatus of claim 10 , wherein the means for adjusting the transmission power for the connection request message is configured to increase the transmission power to be higher than a threshold when the base station decodes the RACH preamble in two or more attempts.
This invention relates to wireless communication systems, specifically improving the reliability of random access procedures in cellular networks. The problem addressed is the inefficiency in initial connection attempts when a user device (UE) sends a random access channel (RACH) preamble to a base station, which may fail to decode the preamble on the first attempt, leading to repeated transmissions and increased latency. The apparatus includes a base station configured to receive RACH preambles from user devices and a power adjustment mechanism. When the base station fails to decode a RACH preamble in two or more attempts, the apparatus increases the transmission power of the subsequent connection request message beyond a predefined threshold. This ensures stronger signal reception, reducing the likelihood of further decoding failures and improving connection establishment efficiency. The power adjustment mechanism may also consider other factors, such as signal quality metrics or network congestion, to optimize power levels dynamically. The invention enhances the reliability of initial access procedures in wireless networks, particularly in scenarios with weak signal conditions or high interference.
13. The apparatus of claim 10 , wherein the means for transmitting is further configured to transmit the connection request message in the number of attempts.
This invention relates to wireless communication systems, specifically addressing the challenge of reliably establishing connections in environments with intermittent signal interference or congestion. The apparatus includes a transmitter configured to send a connection request message to a receiving device. The transmitter is further designed to attempt the transmission multiple times if the initial attempt fails, ensuring the message is successfully delivered despite potential disruptions. The apparatus may also include a receiver to detect acknowledgment signals from the receiving device, confirming successful transmission. If no acknowledgment is received within a specified timeframe, the transmitter automatically retries the transmission, adjusting parameters such as power or timing to improve success rates. The system may also incorporate error detection mechanisms to verify message integrity before retransmission. This approach enhances reliability in unstable communication channels, such as those in industrial IoT or mobile networks, by dynamically adapting to transmission conditions. The apparatus may be integrated into devices like sensors, gateways, or base stations, where consistent connectivity is critical. The invention ensures robust communication by combining multiple transmission attempts with adaptive error handling, reducing the likelihood of failed connections in challenging environments.
14. The apparatus of claim 10 , wherein the information further comprises a beam gain measured at the base station while the RACH preamble is transmitted.
A wireless communication system includes a base station and a user device configured to transmit a random access channel (RACH) preamble to the base station. The system measures the beam gain of the transmitted RACH preamble at the base station. This measured beam gain is used to determine the quality of the communication link between the user device and the base station. The beam gain measurement helps optimize beamforming and resource allocation in the wireless network, improving signal reliability and reducing interference. The system may also include additional components such as antennas, signal processors, and memory to store and analyze the measured data. The apparatus may further include a controller to adjust transmission parameters based on the measured beam gain to enhance communication performance. This technology addresses challenges in maintaining stable and efficient wireless connections in environments with varying signal conditions.
15. The apparatus of claim 14 , wherein the means for transmitting is further configured to transmit the connection request message based on the number of attempts and the beam gain.
A wireless communication apparatus is designed to optimize connection requests in a network environment where signal quality and reliability are critical. The apparatus includes a means for determining a beam gain, which measures the directional strength of a communication beam, and a means for counting the number of connection request attempts made by the device. The apparatus also includes a means for transmitting a connection request message, which is configured to send the message based on both the beam gain and the number of attempts. This ensures that the transmission is only attempted when conditions are favorable, reducing unnecessary power consumption and improving network efficiency. The apparatus may also include a means for receiving a response to the connection request, allowing it to establish or adjust communication links dynamically. The transmission means is further configured to adjust the timing or parameters of the connection request based on the beam gain and the number of attempts, ensuring optimal performance under varying network conditions. This approach helps mitigate issues such as signal interference, weak signal strength, and excessive retransmissions, leading to more reliable and energy-efficient wireless communication.
16. The apparatus of claim 10 , wherein the means for receiving is configured to receive a synchronization subframe.
A wireless communication apparatus is designed to improve synchronization in a network environment where devices must align their timing to maintain reliable communication. The problem addressed is the need for precise timing synchronization in wireless systems, particularly in scenarios with high mobility or varying channel conditions, where traditional synchronization methods may fail or introduce latency. The apparatus includes a receiver configured to obtain a synchronization subframe, which contains timing information used to align the device's internal clock with the network's reference timing. This synchronization subframe may be part of a broader synchronization signal or frame structure, ensuring that the device can accurately determine the start of transmission frames and maintain synchronization with other network nodes. The apparatus may also include additional components, such as a processor to decode the synchronization subframe and adjust the device's timing accordingly, and a transmitter to send acknowledgment or status updates back to the network. The solution enhances synchronization accuracy, reduces latency, and improves overall network performance by ensuring all devices operate in a synchronized manner.
17. The apparatus of claim 16 , wherein the synchronization subframe comprises one or more of a primary synchronization signal, a secondary synchronization signal, an extended synchronization signal, a physical broadcast channel, or a beam reference signal.
This invention relates to wireless communication systems, specifically apparatuses for synchronizing devices in a network. The problem addressed is the need for efficient and reliable synchronization between a base station and user equipment (UE) in wireless networks, particularly in scenarios with multiple beams or complex signal environments. The apparatus includes a synchronization subframe generator that produces synchronization subframes containing signals and channels for time and frequency synchronization. These subframes include one or more of a primary synchronization signal (PSS), secondary synchronization signal (SSS), extended synchronization signal, physical broadcast channel (PBCH), or beam reference signal (BRS). The PSS and SSS are used for initial cell search and coarse synchronization, while the extended synchronization signal provides additional synchronization information. The PBCH carries essential system information, and the BRS aids in beam management for directional communication. The apparatus ensures robust synchronization by transmitting these signals in a structured subframe, allowing UEs to acquire timing and frequency alignment with the network. This is particularly useful in advanced wireless systems like 5G, where beamforming and high-frequency operation require precise synchronization mechanisms. The invention improves synchronization reliability and reduces latency in wireless communications.
18. The apparatus of claim 10 , wherein each attempt is made at a transmission time denoted by a combination of one or more of a frame index, a subframe index, or a symbol index.
This invention relates to wireless communication systems, specifically addressing the challenge of managing transmission attempts in time-division multiplexed networks. The apparatus includes a transmitter configured to send data packets to a receiver over a communication channel. To improve reliability and efficiency, the transmitter schedules multiple transmission attempts for each packet, with each attempt occurring at a specific transmission time. The transmission time is defined by a combination of one or more time indices, including a frame index, a subframe index, or a symbol index. These indices correspond to hierarchical time divisions in the communication protocol, allowing precise synchronization and coordination between the transmitter and receiver. The apparatus may also include a controller that adjusts the transmission parameters, such as power, modulation scheme, or coding rate, based on channel conditions or feedback from the receiver. The system ensures robust data delivery by dynamically selecting optimal transmission times and adapting to varying channel conditions, thereby enhancing throughput and reducing latency in wireless communications.
19. An apparatus for wireless communication, comprising: a memory; and at least one processor coupled to the memory and configured to: transmit a random-access channel (RACH) preamble to a base station in one or more attempts; and receive, through a random access response message from the base station, information comprising a number of attempts the base station uses to decode the RACH preamble; adjust a transmission power for a connection request message according to the number of attempts the base station uses to decode the RACH preamble; and transmit the connection request message using the adjusted transmission power.
Wireless communication systems use random-access procedures to establish connections between user devices and base stations. During this process, a device transmits a random-access channel (RACH) preamble, which the base station attempts to decode. If the preamble is not successfully decoded, the device may retransmit it. However, repeated transmissions at the same power level can lead to inefficient use of resources, either by wasting power or failing to establish a connection. This invention addresses this issue by providing a wireless communication apparatus that dynamically adjusts its transmission power for subsequent messages based on the number of attempts the base station required to decode the RACH preamble. The apparatus includes a memory and at least one processor. The processor transmits the RACH preamble in one or more attempts and receives a random access response message from the base station. This message includes information about how many attempts the base station needed to decode the preamble. The processor then adjusts the transmission power for the next message, the connection request message, according to this number of attempts. Finally, the apparatus transmits the connection request message using the adjusted power level. By dynamically adjusting transmission power based on the base station's decoding performance, the apparatus optimizes power usage and improves the likelihood of successful connection establishment. This approach reduces unnecessary retransmissions and enhances overall communication efficiency.
20. The apparatus of claim 19 , wherein, to adjust the transmission power for the connection request message, the at least one processor is configured to decrease the transmission power to be lower than a threshold when the base station decodes the RACH preamble in one attempt.
This invention relates to wireless communication systems, specifically improving the efficiency of random access procedures in cellular networks. The problem addressed is the unnecessary power consumption and interference caused by transmitting connection request messages at unnecessarily high power levels when the initial random access preamble is successfully decoded by the base station. The apparatus includes at least one processor configured to control transmission power for connection request messages during random access procedures. The processor adjusts the transmission power based on whether the base station successfully decodes the random access channel (RACH) preamble in the first attempt. If the preamble is decoded successfully on the first try, the processor reduces the transmission power for the subsequent connection request message to a level below a predefined threshold. This reduction minimizes power consumption and interference in the network while maintaining reliable communication. The apparatus may also include a transceiver for wireless communication and a memory storing instructions for the processor. The processor may further be configured to determine the threshold value based on network conditions or predefined parameters. The invention optimizes power usage and reduces signal interference, particularly in dense network environments where multiple devices compete for access.
21. The apparatus of claim 19 , wherein, to adjust the transmission power for the connection request message, the at least one processor is configured to increase the transmission power to be higher than a threshold when the base station decodes the RACH preamble in two or more attempts.
This invention relates to wireless communication systems, specifically improving the reliability of random access procedures in cellular networks. The problem addressed is the inefficiency in handling random access channel (RACH) preamble transmissions when initial attempts fail, leading to delays and resource wastage. The apparatus includes a base station with at least one processor configured to manage RACH procedures. During a random access attempt, the base station receives a RACH preamble from a user device and attempts to decode it. If the preamble is not successfully decoded in the first attempt, the base station makes additional decoding attempts. The apparatus monitors the number of decoding attempts required. If the preamble is decoded in two or more attempts, the base station adjusts the transmission power for subsequent connection request messages by increasing it above a predefined threshold. This ensures stronger signal reception, reducing the likelihood of further decoding failures and improving overall access efficiency. The threshold is dynamically set based on network conditions or predefined criteria to balance power consumption and reliability. This adaptive power adjustment mechanism enhances the robustness of the random access process, particularly in challenging radio environments.
22. The apparatus of claim 19 , wherein the at least one processor is further configured to transmit the connection request message in the number of attempts.
A system for managing wireless communication connections includes a device with at least one processor configured to generate a connection request message for establishing a connection with a target device. The processor determines a number of attempts to transmit the connection request message based on predefined criteria, such as signal strength, network conditions, or device capabilities. The processor then transmits the connection request message in the determined number of attempts to improve the likelihood of successful connection establishment. The system may also include a receiver to monitor responses from the target device and a transmitter to send the connection request message multiple times if no response is received within a specified timeframe. The apparatus may further adjust the transmission parameters, such as power level or frequency, during subsequent attempts to optimize connection success. This approach enhances reliability in wireless communication environments where initial connection attempts may fail due to interference or signal degradation. The system is particularly useful in IoT, sensor networks, or mobile devices where stable connections are critical.
23. The apparatus of claim 19 , wherein the information further comprises a beam gain measured at the base station while the RACH preamble is transmitted.
This invention relates to wireless communication systems, specifically improving the reliability and efficiency of random access procedures in cellular networks. The problem addressed is the difficulty in accurately estimating the channel conditions and device capabilities during initial random access, which can lead to suboptimal resource allocation and increased latency. The apparatus includes a base station configured to receive a random access channel (RACH) preamble from a user device and measure the beam gain associated with the transmission. The beam gain measurement provides additional information about the signal quality and propagation conditions, allowing the base station to make more informed decisions during the random access process. This measurement is used to adjust transmission parameters, such as power control or beamforming settings, to optimize subsequent communications. The apparatus also includes a processor that analyzes the beam gain data along with other received information, such as timing advance and signal strength, to determine the most suitable configuration for the user device. This ensures efficient use of network resources while maintaining reliable connectivity. The system may further include a memory for storing historical beam gain data to improve future access attempts. By incorporating beam gain measurements into the random access procedure, the invention enhances the accuracy of channel estimation and reduces the likelihood of failed access attempts, leading to improved overall network performance.
24. The apparatus of claim 23 , wherein the at least one processor is further configured to transmit the connection request message based on the number of attempts and the beam gain.
This invention relates to wireless communication systems, specifically improving connection reliability in scenarios where signal strength or beamforming is critical. The apparatus includes at least one processor configured to manage connection requests between devices, such as in millimeter-wave (mmWave) or 5G networks where beamforming is used to enhance signal quality. The processor determines whether to transmit a connection request message based on two key factors: the number of previous transmission attempts and the beam gain of the communication link. If the beam gain is insufficient or the number of attempts exceeds a threshold, the processor may adjust transmission parameters or retry the request. This ensures efficient use of network resources while maintaining reliable connections in challenging environments. The apparatus may also include a memory for storing transmission parameters and a transceiver for sending and receiving signals. The system dynamically adapts to varying signal conditions, reducing connection failures and improving overall network performance. This approach is particularly useful in high-frequency wireless systems where beamforming and precise signal alignment are essential for stable communication.
25. The apparatus of claim 19 , wherein the at least one processor is further configured to receive a synchronization subframe.
A system for wireless communication includes a processor configured to process synchronization signals in a wireless network. The system receives a synchronization subframe containing synchronization information, such as timing and frequency alignment data, to enable devices to synchronize with the network. The processor extracts this synchronization information from the subframe and uses it to adjust transmission and reception timing, ensuring proper coordination between devices. The system may also include additional components, such as a transceiver for wireless communication and a memory for storing synchronization parameters. The synchronization subframe may be part of a broader synchronization protocol, allowing devices to maintain alignment with the network's timing structure. This ensures reliable data transmission and reception in wireless communication environments.
26. The apparatus of claim 25 , wherein the synchronization subframe comprises one or more of a primary synchronization signal, a secondary synchronization signal, an extended synchronization signal, a physical broadcast channel, or a beam reference signal.
This invention relates to wireless communication systems, specifically apparatuses for synchronizing devices in a network. The problem addressed is the need for efficient and reliable synchronization between a base station and user equipment (UE) in wireless networks, particularly in scenarios involving beamforming or multiple synchronization signals. The apparatus includes a synchronization subframe generator configured to produce a synchronization subframe containing one or more synchronization signals. These signals may include a primary synchronization signal (PSS), a secondary synchronization signal (SSS), an extended synchronization signal, a physical broadcast channel (PBCH), or a beam reference signal. The synchronization subframe is transmitted to enable UEs to detect and synchronize with the network. The apparatus may also include a transmitter to send the synchronization subframe and a receiver to monitor for responses from UEs. The synchronization subframe may be structured to support different synchronization requirements, such as initial cell search, beam alignment, or tracking. The extended synchronization signal provides additional synchronization opportunities, while the beam reference signal aids in beamforming operations. The PBCH carries essential system information, ensuring UEs can access the network efficiently. This apparatus improves synchronization reliability and reduces latency in wireless communications.
27. A non-transitory computer-readable medium storing computer executable code, comprising code to: transmit a random-access channel (RACH) preamble to a base station in one or more attempts; and receive, through a random access response message from the base station, information comprising a number of attempts the base station uses to decode the RACH preamble; adjust a transmission power for a connection request message according to the number of attempts the base station uses to decode the RACH preamble; and transmit the connection request message using the adjusted transmission power.
This invention relates to wireless communication systems, specifically improving the efficiency of random access procedures in cellular networks. The problem addressed is the inefficiency in power control during random access, where a user device (UE) may transmit a random-access channel (RACH) preamble multiple times before the base station successfully decodes it, leading to unnecessary power consumption and delays. The solution involves a non-transitory computer-readable medium storing executable code for a UE. The code enables the UE to transmit a RACH preamble to a base station in one or more attempts. The base station responds with a random access response message containing the number of attempts it took to decode the preamble. The UE then adjusts its transmission power for a subsequent connection request message based on this attempt count. Specifically, if the base station required multiple attempts, the UE increases its transmission power to improve the likelihood of successful decoding. Conversely, if the base station decoded the preamble on the first attempt, the UE may reduce power to conserve energy. The adjusted power is then used to transmit the connection request message, optimizing both reliability and efficiency in the random access process. This approach reduces unnecessary retransmissions and improves overall network performance.
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March 3, 2020
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